/Engine/Source/Developer/Settings/Public/ISettingsModule.h
Removes a settings section from the specified settings container.
void UnregisterSettings ( const [FName](API\Runtime\Core\UObject\FName) & ContainerName, const [FName](API\Runtime\Core\UObject\FName) & CategoryName, const [FName](API\Runtime\Core\UObject\FName) & SectionName )